Abstract
CuF2-mediated selective C-S coupling of 1,4-disubstituted 1,2,3-triazole halides using the widely available DMSO as the methylthiolation reagent were achieved through the chelation of N(2) atom in triazole ring. The ortho- C-halogen bond in N(1) aryl was selectively coupled, while other C-halogen bonds remained, generating 1,4- disubstituted 1,2,3-triazoles bearing aryl methyl thioether fragment.
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